Multiple baseline lightning interferometry - Improving the detection of low amplitude VHF sources

摘要

VHF broadband interferometers have allowed the physical processes occurring during a lightning flash to be mapped out in great detail. High sensitivity measurements allow even very faint sources to be detected and located, giving insight into processes which have been difficult to observe in the past. However, the location uncertainty of a source degrades as the source becomes fainter. One possible way to improve the source location accuracy is by making many independent measurements of the emission though the use of additional antennae. The effects of multiple baseline locations are presented for a single hybrid cloud-to-ground lightning flash, which occurred over Langmuir Laboratory in New Mexico during the summer 2013 storm season.